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Re: Questions about trampolines
Marc Espie <espie@nerim.net> writes:
> On Mon, Mar 14, 2005 at 01:25:34PM +0000, Joseph S. Myers wrote:
>> On Mon, 14 Mar 2005, Robert Dewar wrote:
>>
>> > I have certainly seen it used, but you may well be right that it is
>> > seldom used. It is certainly reasonable to consider removing this
>> > extension from C and C++. Anyone using that feature? Or know anyone
>> > who is.
>
>> Nested functions are used in the glibc dynamic linker. I'm not sure why,
>> and they may be inline nested functions whose addresses are never taken.
>
>> The extension is not present in GNU C++, only in GNU C.
>
> Well, Andreas Schwab seems to think this is no longer the case.
Actually glibc still uses nested functions, but does not take the address
of those being left. The only reason that nested functions are still
being used is that it allows for easier code reuse.
Andreas.
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Andreas Schwab, SuSE Labs, schwab@suse.de
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